Columbus bag survived a 2-story escalator tumble.
"I have been thrilled with the fact that this rolling overnighter fits under the seat in most planes, including smaller ones, but I have another reason to brag about this bag. My packed bag typically weighs about 30 lbs. Last week, while standing at the top of the (fortunately empty) 2-story escalator between the SkyTrain and gate levels at DFW airport, I lost grip of the fully extended handle and watch the bag tumble end over end down the entire escalator span. It took out a 3-inch grooved piece from one of the escalator steps. Astonishingly, my laptop was unharmed and works just fine. The handle did not snap or bend. It is necessary for me to push it hard to get it to retract fully into the badly dented metal sleeve, but I can use the bag until I get a replacement."